Licence account limit doesn't update

Hello.

We have Zimbra Network 5.0.8 running on CentOS 5.1 over a Xen virtual platform, serving more than 40 users, and we have the followint problem: when we remove some user account, the account is removed correctly, but the License accounts limit doesn't update.

So, although we have only 43 users, Zimbra says that we have reached the limit of available accounts -our License is valid for 50 users-.

If we restart Zimbra service, accounts limit shows again the correct number of accounts, but we want to do this without restarting Zimbra.